The string comparison operator eq puts its operands into scalar context:

#! perl
use warnings;
use strict;
use 5.010;

say 'equal' if context('1') eq context('2');

sub context
{
    my $c = (defined wantarray) ?
                    (wantarray  ? 'list' : 'scalar')
                                         : 'void';
    say '(', shift, '): is in ', $c, ' context'; 
    return 42;
}

[download]

Output:

15:56 >perl 457_SoPW.pl
(1): is in scalar context
(2): is in scalar context
equal

15:56 >

[download]

So, neither code snippet is doing what you want. The first compares the sizes of the two arrays. The second compares the size of @array with the value returned by reverse, which

In scalar context, concatenates the elements of LIST and returns a string value with all characters in the opposite order.

To compare the contents of the two arrays, use the smart match operator ~~. See How do I test whether two arrays or hashes are equal?

Hope that helps,

Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

In reply to Re: Palindrome array by Athanasius
in thread Palindrome array by rnaeye

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.